What is the difference between MP4 and MPEG4?
Mp4 is a file format, and mpeg4 is a coding standard, which is not a sense of the concept. Mp4 support mpeg4 standard audio video file, and there are many kinds of support mpeg4 standard file formats, mp4 and avi are one of them. Online should be able to find a lot of software implementation, mp4, WMV, avi, MPG, RBMV video files such as mutual conversionWhat is MP4?MP4 is using mpeg-2 AAC technologies, is the abbreviation for A2B or AAC technologies. Its characteristic is sound quality more perfect and more compression ratio (15:1 – those days). Mpeg-2 AAC when the sampling frequency for 8 ~ 96 KHZ can provide 1 ~ 48 channels can be selected range of high quality audio coding. AAC is the Advanced Audio Coding (Advanced Audio Coding), it is suitable for the bit rate of 8 KBPS mono telephone voice quality to 160 KBPS multichannel ultra high quality Audio signal within the scope of the code, and allows for encoding/decoding multimedia. It increases the such as the perfect reappearance, bitstream effect of stereo sound scan, the characteristics of multimedia control, noise reduction and so on MP3 no made after the audio compression can still perfect reappearance CD quality.

MP4 doesn’t means understanding to mpeg-4 format or MPEG 1 Layer 4. The technical meaning of the origin of the name of MP4 with itself is no direct link, or it should be called mpeg-2 AAC. The true meanings of MP4 origin because of copyright issues, for the record companies, the defects of MP3 is ignored the copyright of authors and publishers should enjoy treatment. So the GMO (Global music one) for MP3 is proposed based on AT&T authorized AAC audio compression method and application of the improved technology – A2B, and name it MP4, its meaning was probably trying to show that is after the MP3 MP4 a upgrading technology.

A2B technology is mainly composed of the following three parts. First, the AT&T audio compression technology patents, it can be to increase the AAC compression ratio to systematically and no loss of quality; Second, the security database, it can do for your A2B music files to create a specific key, and put the key in the database, only the A2B contains this kind of key player to play music; Third, the agreement authentication, the authentication contains replication licensing, allow duplicate copy number, total time, songs can play songs and business information such as sales license.

Accordingly, MP4 is a commodity, it is to use the improved mpeg-2 AAC technologies for audio compression processing, and combined with intellectual property rights authorized by the publishing company directly after the agreement to form a new form of digital music.

(1) each MP4 music is an extension called exe executable file, embedded player, his simple, double-click can run directly play in Windows, it is very convenient.

(2) due to the adoption of advanced A2B audio compression technology, make the MP4 file size is only about three-quarters of the MP3, better quality, larger compression ratio, from the Angle of the MP4 is more suitable for transmission on the Internet, but also a better sound quality;

(3) unique digital watermarking, MP4 adopted called “SOLANA” digital watermarking technology, it can easily track and find the piracy, and any illegal against MP4 decompression behavior could lead to MP4 loss of the original file;

(4) support for copyright protection, MP4 music with built-in including text, images associated with works copyright holders such as copyright, can explain the copyright, and expressed respect for the composers and singing (play);

(5) is relatively perfect function, MP4 can adjust the volume of left and right channels, independent built-in audio waveform/frequency division dynamic display and music manager can support a variety of color image, website links and unlimited scroll text.

Step 1. Import Blu-ray Files
Open “Convert” panel; click “Add Blu-ray/DVD” button icon to load Blu-ray files according to your needs. After importing the source files to the program, you can choose the subtitles and audio tracks you want to convert; playback imported source files according to your needs and adjusts imported files order or edits added videos, etc.Step 2. Specify MPEG as Output Profile
Near to the “Add Blu-ray/DVD” button icon, following the “Prolife” button. You can click it to get a drop-down box, on which you will see 3 sub-tabs, respectively are “Edit”, “Change” and “Apply to All”. By clicking “Change” you can enter the “Profile” panel to specify the output format as MPEG video or MP4 with codec MP4+MP3 (the most compatible formats for almost all portable device) or other supported video formats by your device format.